Rose plant Jacpo

ABSTRACT

A miniature rose variety characterized by the unique combination of its high production of light yellow buds on 12&#34; to 14&#34; stems, many of which are borne in clusters; its resistance to rose powdery mildew; its lack of fragrance.

This present invention relates to a new and distinct variety of roseplant of the miniature class which was originated by crossing thevariety Rise 'n Shine, U.S. Plant Pat. No. 4,231, with an unnamedvariety.

The primary objective of this breeding was to produce a new rose varietyof the miniature class able to produce vigorous, dense growth, and anabundance of long-pointed yellow buds on stems suitable for cut floweruse. This objective was substantially achieved along with otherdesirable improvements as evidenced by the following unique combinationof characteristics which are outstanding in the new variety and whichdistinguish it from its parents as well as from all other varieties ofwhich I am aware:

1. Vigorous miniature plant up to 24" in height outside, approximately48" to 60" in greenhouse;

2. Cutting stems mostly 12" to 14" in length;

3. Frequent production of clusters of 4 to 6 buds;

4. Light yellow buds and open blooms;

5. Strong resistance to rose powdery mildew;

6 Relatively long, but few prickles.

Asexual reproduction of this new variety by budding, as performed atWasco, Calif., shows that the foregoing characteristics and distinctionscome true to form and are established and transmitted through succeedingpropagations.

The accompanying illustration shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor in terminology in accordance with The Royal Horticultural SocietyColour Chart except where ordinary dictionary significance of color isindicated:

Parentage:

Seed parent.--Rise 'n Shine.

Pollen parent.--Unnamed variety.

Classification:

Botanical.--Rosa hybrid.

Commercial.--Miniature.

FLOWER

Observations made from specimens grown in a greenhouse at Irvine, Calif.in June.

Blooming habit: Continuous.

Bud:

Size.--3/4" to 1".

Form.--Long.

Color.--When sepals first divide, Yellow Orange 15B; when half blown,upper side of petals Yellow Orange 15C, often fading to near white ondistal portion of petals: lower side of petals Yellow Orange 15C.

Sepals.--Color: Green 138B. Three appendaged sepals lightly appendaged.Two unappendaged sepals hairy edged.

Receptacle.--Color: Green 138B. Shape: Funnel. Size: Large, broad.Surface: Lightly pubescent.

Peduncle.--Length: Short. Surface: Prickly and pubescent. Color: Lightgreen. Strength: Stiff, erect, slender.

Opening.--Spirally unfolding.

Open bloom:

Size.--Small. Average Open size 2"-21/2".

Borne.--Single, or several together.

Stems.--Medium, strong.

Form.--When first open, high center. Permanence: Flattens; all petalscurl, quill fashion.

Petalage.--Number of petals under normal conditions: 25-30.

Color.--Center of flower: Upper side of petals, Yellow Orange 15B,occasionally lighter 15D to near white; reverse side of petals, yelloworange 15B. Base of petals, Yellow Orange 15B. Major color: YellowOrange 15B to near white on some flowers.

Variegations.--None.

Discoloration.--General tonality at end of first day: Yellow Orange 15C.Third day: Yellow Orange 15C.

Fragrance.--None.

Petals:

Texture.--Thin.

Shape.--Round.

Form.--Edges slightly quilled.

Arrangement.--Imbricated. Petaloids in center, few.

Persistence.--Drop off cleanly.

Lastingness.--On the plant, long. As cut flower, long.

Reproductive parts:

Anthers.--Relatively large. Color: Yellow. Arrangement: Regular aroundstyles.

Filaments.--Color: Yellow.

Pollen.--Gold yellow.

Styles.--Color: Red -- Purple 61A.

Stigmas.--Color: Greenish white.

PLANT

Form: Bush.

Growth: Very vigorous; producing mostly 12" to 14" stems when grown in agreenhouse for cut flowers.

Foliage: Number of leaflets on normal mid-stem leaves: 5 or 7.

Size.--Small.

Quantity.--Normal.

Color.--New foliage: Greyed Purple 187A. Old foliage: Normal green.

Leaflets:

Shape.--Elliptic.

Texture.--Leathery.

Edge.--Serrated.

Serration.--Single, small.

Petiole.--Rachis: Color: Reddish. Underside: With prickles.

Stipules.--Long, edges glandular.

Disease resistance.--Resistant to mildew under normal growing conditionsat Irvine, Calif.

Wood:

New wood.--Color: Reddish. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: Ordinary. On laterals from maincanes: Ordinary.

Form.--Very long, hooked slightly downward.

Color when young.--Red.

Small prickles:

Quantity.--On main stalks, none. On laterals, none.

I claim:
 1. A new and distinct variety of rose plant of the miniature class, substantially as herein shown and described, characterized particularly as to novelty by the unique combination of its high production of light yellow buds on 12" to 14" stems, many of which are borne in clusters; its resistance to rose powdery mildew; its lack of fragrance. 